good evening, i'm pam moore in the kron-4 weather center with jaqueline bennet. jacqueline - you're tracking this bay area wide cold snap? >> jacqueline: oit was very cold this morning reported temperatures right now in the 40's and '50's. 48 in san francisco, antioch and 50s in napa. temperatures are extremely cold tonight. the futurecast showing low temperatures. notice a lot of purple on your screen indicating temperatures in the 30's. temperatures even in the 20s in some areas that is a sexy what we are seeing with 20's through santa rosa, fairfield, pleasanton a. 25 degrees in napa. 20's in livermore. temperatures near freezing 33 and a san jose. we have a freeze morning and a frost advisory coming up will take a look get that and how long this cold spell is going to last. >> pam: the freezing temperatures, combined with wet pavement - making for some dangerous road conditions. this is video from the santa cruz mountains - you can see the black ice. more on this story, later tonight. >> but first - flu season is causing major problems across much of the coun